Motor attachment for sewing-machines.



G. WESLEY. MOTOR ATTACHMENT FOR SEWING MACHINES. APPLICATION TILED JULY10, 1914.

1, 1 33,687; Patented Mar. 30, 1915.

STATES MOTOR- ATTACHMENT FOR SEWING-MACHINES.

Specification of Letters Patent.

Patented Mar. 30, 1915.

Application filed July 10, 1914. Serial No. 850,228.

To all whom it may concern:

Be it known that I, GUsTAr WESLEY, a citizen of the United States,residing at St. Paul, in the county of Ramsey and State of Minnesota,have invented certain new and useful Improvements in Motor Attachmentsfor Sewing-ldachines, of which the following is a specification.

My invention relates to improvements in motor attachments for applyingthe power of motors to the driving of sewing machines, lathes, and othersmall machines to which the mechanism may be applicable."

, The object of the invention is to provide simple, etlicient, andeasily operated means for applying the power of the motor to the machineand releasing the machine from the control of the motor, as well as forchecking the momentum of the machine directly it has been released.

More particularly the invention consists in the construction,combination, and arrangement of parts hereinafter shown and described.

In the accompanying drawings showing an embodiment of the invention,Figure 1 is a rear elevation of a portable motor with a fragment of theadjacent part of the machine, showing the invention appliedthere to;Fig. 2- is a plan view of the same; Fig. 3 is a vertical section throughthe main shaft of the machine on line w-w of Fig. 1, with part of thedriving wheel broken away, and the motor in end elevation; Fig. 4 is adetail in vertical section of the upper part of the pedestal and pivotbearing for the motor.

In the drawings, A represents the upper face of the stand or table uponwhich is supported the machine 13 to be driven. Above the stand themachine has a driving wheel 2 mounted upon one end of the shaft 3.

C is a portable motor, preferably electrical, having a stand or pedestal4 which enables it to be placed upon the table A adjacent the machinewheel 2. f

Upon the projecting inner end of the main shaft of the motor is mounteda frictional driving wheel '5 having a peripheral covering of felt,rubber, or other-friction material. The motor is revolubly mounted uponthe pedestal *1 by means of a pivot bearing 6, so that the motor isfree. to oscillate upon a vertical axis. As here shown the bearing pivotis held rotatably in a bushmg 7 arranged within a slot 8 in thepedestal, and the bushing has rocking support upon a horizontal pin orarm 9 which passes through the pedestal and extends inwardly toward themachine. Revolubly mounted upon the free end of the arm 9 is a sleeve 10having at its outer end a hook 11 and at the other end an upwardlyextending lug 12. The lug carries a transverse pin 13 which extendsloosely through an enlarged hole in the depending end of an angular arm14. This arm is bolted or otherwise secured to the inner end of themotor frame. shown it extends part way around the hub of thernotor, andat its lower end it is bifurcated and formed with forked arms 15 whichvfit over and straddle the pin 9 as shown in Fig. 3. At a point betweenits ends it is formed with an elbow 16, upon the outer face of which issecured a brake cushion 17 of rubber or other friction material. Bymeans of this elbow the brake cushion is ex.- tended forwardly of themotor wheel 5, as shown in Fig. 2, but it does not project out farenough -to reach the vertical plane in which the wheel turns.

The oscillatory motor,is held resiliently in anormal position by meansof a spring 18 which is coiled about the arm 9 with one end secured tothis arm or resting against the pedestal at, and the other end restingagainstthe arm 14 or the pin 19 carried thereby. The motor is arrangedto be-oseillated against the pressure of the-spring by means of atreadle, which may be the usual operating treadle of the machine,througn the medium of a cord, strap'or other suitable connector 20secured at one end to the treadle not shown) and at the other end hookedover the book 11 or otherwise detachably secured to the sleeve 10. Adownward pull upon this connector will cause the sleeve to beturned sothat its pin 13 will exert a forward pressure upon the lower end of thearm 14, and cause the motor to swing upon its pivot'against the pressureof the spring. When the sleeve is relieved from the pull. the motor willbe swung back by the spring into normal position again.

In use the motor is placed upon the stand or table in such position thatthe motor v. heel 5 willbe in substantial alinement with the drivingwheel of the machine and just out of engagement therewith, as shown inAs here held by the spring 18 resiliently 7 pressed wheel.

the outer side face of the. machine This is preferably the normalposition of the parts and the normal relation of the motor wheel andbrake to the machine wheel, when the machine is at rest. To release thebrake and apply the power of the motor to the machine wheel it is onlynecessary to depress the treadle so as to exert a downward pull upon thecord 20, whereby, through themedium of the sleeve 10, pin 13, and arm14, the motor will be swung forward on its vertical axis against thepressure of the spring 18 a sufficient distance to free the machine fromthe pressure of the brake, fiphery ofthe motor wheel 5 into frictionalengagement with the periphery of the maagainst chine wheel 2. The wheel2, being thus re-- leased from the brake, will be driven by thefrictional pressure of the motor wheel so long as the treadle remainsdepressed and the downward pull upon the cord 20 continues. When thetreadle is released so that the downward pull upon the cord 20 ceases,the spring 18 will cause the motor to swing back again into the positionshown in Fig. 2,

thus freeing the machine from the power-of the motor and at the sametime apply ng the bra'ke'to the machine wheel to stop its momentum. Byhaving the lower end of the arm 14 bifurcated so that its forked armswill straddle the pin 9, as shown in the drawings, these arms will serveas a check 3 to limit the swing of the motor under tension of itsspring, when the motor is removed from the machine so as to disarrangethe relation of the spring to the niotor.

I claim as my invention:

1. The combination .with the driving wheel of a machine, of a motorarranged adjacently thereto and mounted to oscillate upon averticalaxis, said motor having on its shaft a friction driving wheelengageable with the periphery of the machine wheel when the motor isswung in one direction, and on its frame a brake engageable with theside face of the machine wheel when the motor is swung in the oppositedirection.

2. The combination with the driving wheel of a machine, of a motorarranged,

pin carried by the pedestal, ,a sleeve loosely zadjacently thereto andmounted to oscillate upon a vertical pivot, said motor having on itsshaft a friction wheel alining with and engaging the periphery of themachine wheel when the motor is swung in one direction, and on its framea brake engaging the side face of the machine wheel when the motor isswung in the opposite direction, spring means for keeping the motornormally swung into a predetermined position, and

means for swinging the same against the pressure of the-spring. p

3. A motor attachment for machines comand at the same time to bring thepeprising a motor mounted to oscillate on a vertical axis, a frictionaldriving wheel upon one end of the motor shaft, a downivardly extendingarm upon the adjacent to hold the motor normally in a predeter-' minedposition, and mechanism operatively connected .vith the. lower end ofsaid arm whereby to move the same against the pressure of said springand therebyswing the motor away from its normal position.

4. A motor attachment for machines comprising a motor mounted-to swingupon a vertical axis, a frictional driving wheel upon one end of themotor shaft, a downwardly extending arm secured to the adjacent end ofthe motor frame, and having an elbow extending forwardly of the motorwheel, a brake cushion mounted upon said elbow and extending out toward,but not into, the vertical plane of the motor wheel, spring meansengaging the lower end of said arm for holding the motor in normalposition, and mechanism acting upon said arm upon a vertical pivot, africtional driving I wheel upon one end of the motor shaft, a laterallyextending pin carried by the pedestal, a downwardly extending armsecured to the end of the motor frame with its lower end straddling saidpin, spring means exerting pressure on said arm, a sleeve looselymounted upon said pin and engaging said arm, and means for turning saidsleeve whereby to move the arm against the-pres sure of its spring andthereby swing the motor. I l

6. A motor attachment for machines comprising a pedestal, a motorsupported thereon so as to swing on a vertical am's, a frictionaldriving wheel mounted upon one end of the motor shaft, an arm securedupon the adjacent end of the motor frame, a brake cushion secured uponthe side face of said arm and extending toward,'but not into, the

vertical plane of said wheel, a transverse laterally extending pincarried by the pedesd:

tal, a downwardly extending spring presse secured to the end of themotor frame In testimony whereof I aflix my signature with its lower endforked and straddling in presence of two witnesses. said pin, whereby tolimit the spring actuated swing of the motor, and means for i GUSTAF Smoving said arm against the pressure of its Witnesses: spring whereby toswing the motor away H. SWANSON, from its spring held p sition. AnrmmP.- Lornnor.

